If a number is subtracted from the square of its one half, the result is 48. The square root of the number is?

Question

Accepted Answer

Let the number be N. Then (N/2)2 - N = 48 ⇒ N2/4 - N = 48 ⇒N2 - 4N-192= 0 ⇒ (N-16) (N+12) = 0 ⇒ N = 16 ∴ The square root of the number is 4.

More Questions from Number System